Experimental investigation of torque measurement in hermetic compressor

International Conference on Compressors and their Systems 2019

Xu, J.^1^2 ; Liu, P.^2 ; Ren, L.P.^1^2 ; Kong, L.C.^2

State Key Laboratory of Air-conditioning Equipment and System Energy Conservation, Zhuhai, Guangdong

519070, China^1

Gree Electric Appliances Inc., Zhuhai Guangdong

519070, China^2

关键词: Experimental investigations;    Hermetic compressors;    Measuring systems;    Mechanical efficiency;    Motor efficiencies;    Torque curves;    Virtual instrument;    Working process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/604/1/012056/pdf
DOI  :  10.1088/1757-899X/604/1/012056

来源: IOP

【 摘 要 】

In order to measure the compressor torque accurately and guide the design efficiently, a torque measurement method for the hermetic compressor is proposed. Then the shaft power measuring system is established by using a virtual instrument developed by LabVIEW. The stability of slip ring is monitored in real time through an external static full bridge circuit for eliminating the influence of its unstable contact resistance on measurement during the working process. The experimental results indicate that the change of contact resistance cannot be neglected in measuring process. The experimental torque curve is in agreement with the theoretical one. The measured shaft power of the prototype is 320W, finally the motor efficiency and the mechanical efficiency is 91.7% and 89.1%, respectively.